Universal joint.



W. GHADWICK.

UNIVERSAL JOINT. APPLICATION r1121) FYI-13.19, 191s.

' Patented Sept.22,1914.

' :Fi l- WALLACE CHADWICK, 0F SCHENECTADY, NEW YORK.

UNIVERSAL JOINT.

' Specification of Letters Patent. I Pat nted Sept. 22, 1914.

Application filed February 19, 1913. Serial No. 749,469.

To all whom it may concern Be it known that l, lVaLLAcE CHAnwlck, acitizen of the llnited States, residing at Schenectady, in the county ofSchenectady and State of New York, have invented certain new and usefulImprovements in Universal J oints; and 'I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it apvide a balland socket joint for permitting the angular movement of one member of ashaft relatively to the other and to always insure rotation of bothmembers in the same direction.

. Still another object of the invention is to provide a universal jointin which the socket member is provided with a rectangular socket and theball'member is provided with a central bearing portion which is curvedlongitudinally of the shaft and is rectangular when viewed in plan or inalinement with the shaft, so that the ball member will move angularlyor' at various inclinations from the socket and insure the rotationofboth members, owing to'the formation of the socket and the angularcontour of theball member when viewed in alinement with the shaft.

These and other objects may be attained .by inc-ans of the constructionillustrated in the accompanying drawing in which:

Figure 1 is a side'elevationand partial section of a universal jointmade in accordance with my invention. Fig. 2 is a vertical sectionalview taken on the line 2-2 of provided with a bore or hearing 2 forashaft. A rectangular socket 3' is formed in this member, and an annularrecess 4 surrounds the socket near the outer end thereof.

transversely square.

The ball member of the joint comprises a shank 5, having a bore orbearing 6,for a shaft and a head comprising a reduced portion 7 androunded parts 8 and 9. Intermediate the portions 8 and 9 is a bearingelement 10 provided with curved surfaces 11 which extend across theelement from side to side and from top to bottom. These four curvedsurfaces 11 at their greatest diameters represent the internal crosssection of the socket 3. The corners of the member 10 are curved on thesame radii as the surface 11. These corners are indicated by the numeral12. For holding the ball member in the socket I provide a split ring 13which fits within the annular recess 4 and is held in place by smallscrews 14. The split ring 13 is provided with a plurality of angularrecesses 13' o ening on the inner edgeof the ring and con orming to theshape generally, of the curved surfaces 11; The recesses areapproximately V-shaped and adapted to receive the bearing elementlO.

A dust cap 15 is provided with a collar 16 connected to the shank 5 by ascrew 17 said dust cap projecting over the socket member to entirelyinclose the opening therein.

From the foregoing it will be obvious that a universal joint made inaccordance with my invention will permit the angular movement of onemember of the shaft and at the same time insure the rotation of bothmembers in the same direction, owing to the fact that the socket member'is square and the ball member is longitudinally curved and My inventionis simple in construction, can be manufactured at low cost, is easy toinstall, can be readily assembled and is strong, durable andefiicientfor its purpose.

In a' universal joint, a socket member having a rectangular socketprovided with an annularrecess adjacent the outer edge thereof, 'aball'member provided with rounded portions, the inner rounded ortion ofwhich is adapted to engage the at bottom wall-of the socket, the ballmemberbeingprovided With'bearing elements formed centrally andintermediate theends of said rounded ortions and adapted to engage theside walls of the socket, the greatest diameter of the bearing elementsbeing equal to the internal cross section of the socket, said bearingelements having their hearing surfaces longitudinally curved and endingcesses upon its fdce adapted to receive the 10 short of the ends of saidrounded portions, bearing elements.

1 and a split ring mounted within said annu- In testimony whereof Ieflix my signature 7 121111 retiess, lying flush with the oute1l'1 edgg'in presence of two'witn'e'sses.

t ereo and having certain portions t ereo 1 engaging the' upper roundedportion above L E CHADWICK" the bearlng'elements to hold said ball mem:Witnesses: ber Within said socket, said split ring being HARRY ALBALNES,

provided with a plurality of V-shaped re-. MAnTmSrrrs,

